<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../lib/jquery.min.js"></script>
</head>

<body>
    <form id="f1" action="/login">
        <input type="text" name="user_name" />
        <input type="password" name="password">
        <button type="submit">提交</button>
    </form>

    <script>
        $(function () {
            $("#f1").on("submit", function (e) {
                //阻止表单默认提交行为
                e.preventDefault();

                let data = $(this).serialize();
                console.log(data);
            })
        })
    </script>
</body>

</html>